Continuing from part 1

In this part I'm adding a PIR sensor.

Step 1: PIR - modification

I wanted to make the garden light PIR activated, so have added this PIR sensor from SparkFun.

Although the sensor has an input voltage of 5V to 12V DC, it actually runs at 3.3V. So, if you bypass the voltage regulator it will run using the battery in the garden light control unit. I powered the PIR up using 5V and then using my multimeter verified where to attach the new power feed.
A bright idea! :P Lights up the darkness. One question, how much does the whole thing consume when on stand by?
about 35mA maybe :) the MCU power. I see this is arduino code I think is possible to put MCU is sleep mode and this will eat less power

About This Instructable




Bio: I enjoy cycling and photography, and especially photography whilst cycling. :)
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